📝 docs: Add missing example code file name (#66251)

Author: atik-persei

docs/02-app/01-building-your-application/05-styling/01-css-modules.mdx

@@ -114,7 +114,7 @@ Global styles can be imported into any layout, page, or component inside the `ap
 
 For example, consider a stylesheet named `app/global.css`:
 
-```css
+```css filename="app/global.css"
 body {
   padding: 20px 20px 60px;
   max-width: 680px;